719999985 has 16 divisors (see below), whose sum is σ = 1152841536. Its totient is φ = 383719488.

The previous prime is 719999977. The next prime is 719999999. The reversal of 719999985 is 589999917.

It is not a de Polignac number, because 719999985 - 2³ = 719999977 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4587 + ... + 38223.

It is an arithmetic number, because the mean of its divisors is an integer number (72052596).

Almost surely, 2^719999985 is an apocalyptic number.

It is an amenable number.

719999985 is a deficient number, since it is larger than the sum of its proper divisors (432841551).

719999985 is a wasteful number, since it uses less digits than its factorization.

719999985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35072.

The product of its digits is 16533720, while the sum is 66.

The square root of 719999985 is about 26832.8154504890. The cubic root of 719999985 is about 896.2809430873.

The spelling of 719999985 in words is "seven hundred nineteen million, nine hundred ninety-nine thousand, nine hundred eighty-five".